Over the past 110 years, 6 girls and 16 839 boys have been named Jax. The name Jax ranks 16895th in the United States among the most common names for girls. For the first time more than ten times newborns were named Jax in 2015. The peak of popularity of the name Jax came in the 2010s. You can see absolute numbers and relative numbers on the chart. Indicators per 100K more accurately assess the popularity of the name.